body {
    position:fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    line-height: 50%;
    /*background-image: url("../img/csignbgc.jpeg");*/
    background-repeat: no-repeat;
    -webkit-background-size: cover;
    -o-background-size: cover;
    background-size: cover; /* 背景图适应屏幕 */
    background-position: center 0;
    min-width: 1000px;
}

.login_box {
    background-color: #fff;
    margin: auto;
    margin-top: 150px;
    border-radius: 5px;
    overflow: hidden; /*.title设置margin-top无效，给父元素设置overflow:hidden; */
}

.title {
    font-size: 20px;
    color: #000;
    margin-top: 80px;
    margin-bottom: 10px;
    letter-spacing: 3px;
    margin-left: 140px;
    font-family: sans-serif;
}

.login_box > p {
    margin: 0;
}

.input_box,.linkSale > select {
    width: 300px;
    /*height: 30px;*/
    /*width: 300px;*/
    height: 40px;
    text-indent: 10px;
    margin-top: 20px;
    margin-left: 50px;
    border-radius: 4px;
    background-color: #fff;
}

.button_box {
    width: 300px;
    /*height: 35px;*/
    /*width: 300px;*/
    height: 40px;
    /*margin-top: 30px;*/
    margin-left: 50px;
    border-radius: 5px;
    background-color: #64a9d9;
    cursor: pointer;
    color: #fff;
}

.logo_box {
    position: absolute;
    /*background-color: #fff;*/
    width: 200px;
    height: 100px;
    /*border-radius: 100px;*/
    top: 108px;
    left: 90px;
    /*border: solid 5px #A68364;*/
    text-align: center;
}

.logo_img {
    width: 160px;
    height: 60px;
    margin-top: 13px;
}

.learn {
    width: 100%;
    padding: 10px 60px;
}

.err_box {
    padding: 3px 15px;
    margin-top: 7px;
}

.err_box > span {
    margin-left: 15px;
    font-size: 13px;
    /*display: none;*/
    color: orangered;
    font-family: "Arial", "Microsoft YaHei", "黑体", "宋体", sans-serif;
}

.login_box > .regis_link {
    margin-top: 45px;
    margin-left:230px;
    font-family: "Arial", "Microsoft YaHei", "黑体", "宋体", sans-serif;
}

.login_box > .regis_link > span {
    font-size: 12px;
}

.login_box > .regis_link > span > strong {
    font-size: 16px;
}